Your mission
About Us:
The Hashgraph Group (THG) is a global organization headquartered in Switzerland, and is a part of the Hedera Hashgraph (“Hedera”) ecosystem.
Hedera is a revolutionary proof-of-stake public Distributed Ledger Technology (DLT) network that is fast emerging as the gold standard in DLT for enterprise-grade solutions and decentralized applications (dApps). Hedera is governed by a council of the world’s leading organizations - which include Google, Boeing, IBM, Dell, Deutsche Telekom, LG, Abrdn, London School of Economics, to name a few.
THG works closely with enterprises, startups, governments, and academic and training institutions around the world to deliver financing, custom-design solutions, and professional training and innovation programs, aimed at accelerating the development and utilization of the Hedera Hashgraph network.
Your profile
About the Role:
We are currently seeking a skilled Web3 Backend Developer to join our innovative engineering team. In this role, you will be responsible for developing robust backend infrastructure for our decentralized applications using TypeScript and NestJS.
Key Responsibilities
Design and implement API endpoints using NestJS with TypeScript
Document API specifications using OpenAPI (Swagger)
Develop comprehensive test suites including:
Manage database connections and schema migrations in NestJS
Interact with Ethereum Virtual Machine (EVM) smart contracts
Create and manage blockchain transactions
Collaborate with frontend and blockchain teams to ensure seamless integration
Required Skills
Expert-level TypeScript programming
Advanced NestJS framework experience
Proficiency in database connection and migration tools
Understanding of blockchain transaction mechanisms
Strong knowledge of testing frameworks (Jest/Vitest)
Experience with API documentation tools like Swagger
Familiarity with EVM and blockchain ecosystems
Technical Stack
TypeScript
NestJS
Jest/Vitest
OpenAPI/Swagger
Ethereum blockchain
Database migration tools
Bonus Points
Previous Web3 backend development experience
Understanding of decentralized application architectures
Knowledge of smart contract interactions